Safety-pin machine



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J. JENKINS I SAFETY PIN MACHINE. v No. 345,144. Patented July 6, 1886.

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SAFETY PIN MACHINE.

No. 345,144. Patented July 6, 1886.

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0408 I MW Users STATES JOEL JENKINS, OF MONTGLAIR, NEW JERSEY.

SAFETY-PIN MACHINE.

SPECIFECATION forming part of Letters Patent No. 345,144, dated July 6, 1886.

Application filed May 7, i886. Serial No. 201,464. (No model.)

To all whom it may concern.-

Be it known that I, JOEL JENKINS, of Mona clair, in the countyof Essex and State of New Jersey, have invented a *new and useful improvement in Safety-Pin Machines; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making a part of this specification, in which- Figure 1 is a front elevation, partly in section, of my headingmachine for safety-pins; Fig. 2, an irregular vertical section in line was of Fig. 1; Fig. 3, a transverse section in line y y, and Fig. 4 a similar section in line 2 z of Fig. 2.

My invention relates to that class of machines for heading safety-pins in which the Wire blank for the pin is carried automatically into register 'with mechanism by which a shield or hrad is fitted upon its bent end and clamped and secured thereon by a suitable punch or squeezer, the headed blank being thereupon carried forward to the mechanism for bending and coiling it. The object there of is to simplify the construction of such a machine and perfect its operation.

In the accompanying drawings, A A represent'standards in the fraine'of the machine, and B a shaft supported in suitable bearings on the upper ends of the standards. This shaft is driven by a prime motor geared thereto in any customary manner.

0 is a reciprocating block mounted to slide up and down vertically in suitable ways between the standards A A, and which is actuated by a crank,D,on the shaft 13. The crank D is connected to the block by a coupling-rod,

E, pivoted to the block at a, (see Fig. 2,) and is made adjustable in its length by a right-andleft screw-coupling, F.

A cutting-punch G, and a forming-punch, H, are secured side by-side a short distance apart (see Fig. 3) to the bottom of the vertically-reciprocating block 0, to project therefrom in a common" vertical plane passing through the longitudinal axis of the shaft B.

A cutting-die, L, is mounted upon the top of the bed-plate I, (see Fig. 3,) immediately under the cutting-punch G, and a shallow rectangular aperture, b, slightly wider than the face of the punch, is formed through the die at a right angle with the axis of the shaft B; This aperture is adapted to receive a thin strip of sheet metal, I), (see dotted lines, Fig. 4,) constituting the stock out of which the blanks forthe pin heads or shields are to be cut by the punch G. The stripis fed forward at each stroke of the punch by mechanism such as is commonly employed for the purpose, and which it is not necessary herein to describe. The punch G, dropping through the die L upon the strip 1), will cut out a blank therefrom, and the blank when out out will drop into a recess, 0, upon a transverselymoving plate or slide, K, (see Fig. 3,) which is made to reciprocate upon the top of the bed-plate I, at a right angle to the strip under the die L and the punches G and H, a transverse aperture being cut in the bottom ofthe die L (see Fig. 1) to allow it to pass through the same. The length of the reciprocating movement imparted to this slide K is such as to carry the rearend of the recess 0, which receives the blank from the cutting-punch G, forward under the forming-punch H at each rotation of the main shaft. The recess in the slide is so cut out and fashioned in connection with a die, (1, formed in the bed-plate I immediately under the punch H, (see Fig. 2,) as that when the punch H descends upon the blank it will force it down out of the recess 0, through the die d into a recess in the bedplate I beneath it, and in forcing it down will bend it into the shape required in a shield or head for the safety-pin. This process of forming the shield or head is well known to the art, and requires, therefore, no further description. The recess e, in which the head is formed, is intersected by a transverse aperture formed at a right angle with the slide K, and which extends entirely through the bed-plate 1. Within this aperture a bar, M, is fitted, and so adjusted as that when the rear end of the recess 0 in the slide K is in position to receive the blank from the cutting-punch G the front end of the bar M shall just clear the bottom of the opening d, so that the shield or head m,which has been deposited vertically therein, may drop into position in front of said bar. The front end of the feed-bar M is furnished with an upper projection or finger, t, which, when the feed-bar moves forward, will strike the upper open end of the shield m,

standing vertically in the opening as it has dropped from the forming-punch, (see Fig. 2,) and will push it over, so that the shield will be carried forward by the bar, with its open end to the front, in position to pass upon the bent end of the pinblank P, upon which it is to be secured.

The pin-blanks P P (see Fig. 3) are brought forward in succession, with their bent ends over and upon the anvil N, by means of the two parallel spirally-grooved conveying shafts B R, rotating in a horizontal plane in front of the anvil and at a right angle to the line of movement of the feed-bar M.

The pin-blanks P P are laid transversely upon the shafts 1t It at a right angle to their axes, to rest in the spiral groove in each, and are carried forward by the rotation of the shafts until brought upon the anvil. At this point the spiral groove upon each shaftis carried at a right angle to the length of the shaft (see at t, Figs. 1 and 2) around so much of the circumference thereof as may in the rotation of the shaft be required to detain the blank resting in the groove long enough at said point to permit a shield to be placed upon the end of the blank and made fast thereon.

So soon as the pin-blank P enters thetransverse length t of the spiral groove, a springactuated yielding presser-foot,0, carried by a vertically-reciproeating bar, Q,is made to drop upon the blank to hold it fast, (see Fig. 2,) while a punch, Q, carried upon the same bar Q so as to play directly over the anvil N, descends upon the shield previously pushed out upon the end of the pin-blank and clamps it firmly upon the same. 1

The movement of the bar Q and clampingpunch Q is obtained at proper intervals and Ill proper relation to the movementot' the feed bar M by means of an eccentric wheel, S, upon the shaft B, the strap of said eccentric being connected to the bar Q by a pivoted couplingrod, S, asillnstrated in Fig. 2.

The slide K is attached at its outerend to a heavy parallel bar, V, (see Fig. 1,) playing in a recess in the bed-plate I, and which serves to steady its movements. The slide and bar are actuated by means of a lever, T, pivoted to the frame atf, (see Fig. 1,) to vibrate in a vertical plane parallel with the shaft B. The upper end of this lever is provided with a lat,- eral pin, 9, adapted to engage a cam-groove, h, out in the periphery ofa wheel, T, fixed on the shaft B, so that the rotation of the wheel shall cause the lever to vibrate to and fro upon its pivot f during a portion of the revolution of the wheel and remain still during the re mainder thereof. The lower end of the lever T is connected to the bar V by means of a coupling rod or link, V, pivoted to the one and the other. The pivot-pin f, upon which the lever swings, passes through a longitudinal slot, 10, in the lever, so as to permit of an adjustment of the lever, notwithstanding its attachment to the bar V.

The feed-bar Mis actuated by means of abent lever, 1, (see Fig. 2,) pivoted to the frame of the machine at 2, and whose longer dependent arm is pivoted by a slotted connection at 3 to a link, 4, pivoted in turn to the outer end of the bar M. The upper shorter end of the lever 1 is connnected by a rod, 5, to the strap 6 of an eccentric, 7, on the shaft B, so that the rotation of the shaft will operate to rock the lever 1, and thereby produce a reciprocating movement of the feed-bar M.

A cutting-punch may be formed to encircle the forming punch H in manner well known to the art, so that the latter shall descend within and through the former upon the blank cut out by it and force said blank into and through the formingdie in manner as has heretofore been commonly done in machines for cutting and shaping blanks of sheet metal. In such case the strip bof metal stock is fed directly over the opening or forming die (1, under the punch H, and the slide K is entirely dispensed with, the operation of cutting out the blank and forcing it into and through the die cl being performed without the necessity ofa transference of the blank after it has been severed from the strip 1); or the blank shields or heads for the pins may, instead of being formed in the machine by means of the cutting and forming punches G and H, attached thereto in manner as described, be formed in a separate machine and delivered to the opening 0 through a feed-tube, to be then carried forward in manner as described by thehorizontal feed-bar M to the anvil and pin-blank.

l contemplate the use, as an equivalent for the conveying-shafts R R, of an endless carrier-belt or of a rotating carrier-wheel, such as are already known and in use in safety-pin machines for delivering intermittently a piir blank upon the anvil M, and which, after at lowing the blank to rest upon the anvil long enough to receive the shield or head, will carry it forward therefrom to be replaced by another blank.

In the operation of my improved heading machine the blanks P P for the pins are fed forward in the customary manner by the rotating shafts It t or other equivalent device, so as to carry their bent ends over the anvil N, and each blank is momentarily arrested upon the anvil. At this moment the reciproeating bar Q, desends and the presser-foot O is brought to bear upon the blank P to hold it firm. As the presser-foot yields by reason of the compression of its spring, the clampingpunch Q descends toward the anvil to clamp and secure upon the blank a head or shield, m, meantime fitted upon the bent end of the blank, by the movement toward it of the feedbar M, the shield having been tipped over by the finger'i from its vertical position at the bottom of the opening (2 in the bed-plate into a horizontal position with its open end forward to pass over-and upon the bent end of MMWWW the blank 1? when carried to it by said movement of the feed-bar. As the feed-bar M moves to and from the anvil N, the clamping and forming punches G and H are elevated, and so soon as the feed-bar has moved back of the die-opening d the punches descend and the one, G, cuts a blank from the strip I), and the other, H, forces the blank left beneath it through the opening cl into position to be engaged and fed forward at the next movement.

of the feed-bar M. During each movement of the feed-bar the slide K moves from the cutting to the forming punch and back again, thereby carrying the blank cut from the strip I) by the former into position under the latter. In this manner a shield or head is formed and is carried and placed upon each blank brought to and arrested upon the anvil, and is then clamped and secured upon the blank before the latter is started forward and removed from the anvil.

I claim as my invention 1. Thecombination, inasafety-pin machine, with an anvil-block and mechanism, substantially as described, for conveying a wire blank to and from said anvil, of a reciprocating feedbar moving back and forth in an aperture extending in a plane coincident with the length of the blank through the bed-plate of the machine between the anvil and a recess formed in the bed-plate for the reception of a pin head or shield, whereby, in the movements of the machine, the pin head or shield placed insaid recess is transferred by the feed-bar to the an vil and fitted upon the blank restingthereon,

substantially in the manner and for the pur-' pose herein set forth.

2. The combination, in asafcty-pin machine, with an anvil-block, mechanism, substantially as described,for conveying a pin-blank to and from said anvil, and a reciprocating clampingpunch descending over the anvil, ofa yielding presser-foot attached to the punch to descend in front of the anvil and rest upon the pinblank when it is detained over the anvil, substantially in the manner and for the purpose herein set forth.

3. The combination, in asafety-pin machine, with an anvil-block, and mechanism, substantially as described, for conveying a wire blank to and from said block, and a reciprocating feed-bar moving back and forth in an aperture extending in a plane coincident with the length ofthe blank through the bed-plate ofthe machine between the anvil and a recess formed in the bed-plate for the reception of adetached head or shield, of a forming-punch reciprocating into and out of the opening or die over the receivingrecess which is traversed by the slide, whereby a blank placed under the forming-punch is forced by it into the receivingreeess to be thence carried to the anvil, all substantially in the manner and for the purpose herein set forth.

4. The combination, in asafety-pin machine, with an anvil-block, and mechanism, substantially as described, for conveyinga wire blank to and from said block, and a reciprocating feed bar moving back and forth in an aperture extending in a plane coincident with thelength of the blank through the bed-plate of the machine between the anvil and a r'ecess formed in the bed-plate for the reception of a detached pin head or shield, of a slide moving immediately over said receiving recess, a cuttingpunch reciprocating to and from the bed-plate to cut at each move a head-blank from a strip fed forward in an extended recess above the slide, and a forming-punch reciprocating into and out of the opening over the receiving-recess which is traversed by the slide, whereby the blank cut out by the cutting-punch is carried under the formingpunch and is forced by it into the receiving-recess to be thence carried to the anvil, all substantially in the manner and for the purpose herein set forth.

5. The combination, in asafety-pin machine, of the rotating shaft B and the eccentrics and cam-wheels thereon, the reciprocating bar Q, actuated by the eccentric S, and the presserfoot 0 and clamping-punch Q, carried by said bar, the reciprocating block 0, actuated by the eccentric D, and the cutting and forming punches G and H, carried by said block, the slide K and its lever T. actuated by a camgroove, /z, in the wheel T, and the feed-barM audits lever 1, actuated by the eccentric 7,

all substantially in the. manner and for the purpose herein set forth.

In testimony whereof I have signed my name to this specification in thepresenee oftwo subscribing witnesses.

JOEL JENKINS.

Witnesses:

WM. S. GUERINEAU, S. A. STAvERs.

lOC 

